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How Sal Khan Raised $4 Million to Provide Free Education for Everyone

In 2006, the Louisiana native founded Khan Academy, an early web learning pioneer known for its free but engaging courses on everything from high school math to art history. Since then, it has become what Forbes called the “largest school in the world,” with over 12 million monthly users and 2015 revenue of almost $28 million. While the 40-year-old is best known as an educator—he was inspired to start the school after tutoring his cousins—he’s always been a numbers guy. “